Recombinant sequence, its preparation and use

ABSTRACT

An isolated, purified or recombinant nucleic acid sequence is disclosed, comprising: (a) a sequence that encodes both an angiogenic factor antagonist and a vascular endothelial structure regulator; (b) a sequence substantially homologous to or that hybridises to sequence (a) under stringent conditions; or (c) a sequence substantially homologous to or that hybridises under stringent conditions to the sequence (a) or (b) but for the degeneracy of the genetic code; or (g) an oligonucleotide specific for any of the sequences (a), (b) or (c). Particular oligonucleotides (d) are those encoding the vascular endothelial structure regulator. Also described are methods for preparing the recombinant polynucleotide, proteins encoded by such polynucleotides and their use in gene or protein therapy for the treatment of conditions such as cancer.

[0001] The present invention relates to a recombinant nucleic acid sequence encoding both a specific angiogenesis factor antagonist and a vascular endothelial structure regulator; its preparation; protein expression; and the use of the sequence or the protein in the inhibition of angiogenesis and/or the treatment of cancer.

[0002] Angiogenesis, the formation of new blood vessels, is a key in the development and progression of cancer. Angiogenesis is governed by a range of angiogenic factors and anti-angiogenic factors. Angiogenic factors are known to include a range of cytokines, such as vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF) eg Basic FGF (bFGF), interleukins (ILs, eg IL-8) and hepatocyte growth factor/scatter factor (HGF/SF). Without new blood vessels, a tumour can not grow beyond 2 mm in diameter, due to limited blood supply and nutrient/oxygen diffusion.

[0003] Furthermore, tumour cells may disseminate in the body and produce micro- and macro-metastasis in organs and tissues, but remain invisible for from months to years. Once new blood vessels grow into these quiescent tumours, they will grow at a much faster speed, begin to manifest clinical symptoms and become lethal to patients. New blood vessels in the tumour provide not only nutrients and oxygen, but also a passage for tumour cells to enter the circulation and therefore aid the process of metastasis.

[0004] Therefore, anti-angiogenesis has become a focus in the development of new anti-cancer drugs. The fundamental importance of angiogenesis in cancer development and metastasis has prompted the discovery of a large number of angiogenesis inhibitors, including agents specifically designed as anti-angiogenesis agents (such as anti-VEGF antibody, anti-bFGF antibody, fumagillin and recombinant products based on a single gene, such as angiostatin), and those discovered unintentionally (such as beta-inteferon, tamoxifen and interleukins-4 and -12).

[0005] Some of the angiogenic factor antagonists are suitable for the purpose of anti-angiogenesis, but others are not. For example, each antagonist works specifically on only one particular angiogenic factor, whereas there are about 20-40 angiogenic factors in the body, in any given tumour. Another problem is that using a specific antagonist will result in a balance switch in which the targeted angiogenic factor is suppressed, but other factor(s) increase in compensation. Hence, the balance shifts from the targeted angiogenic factor to another or others, resulting in resistance to anti-angiogenesis therapy.

[0006] Accordingly, the present invention is directed to an agent to suppress angiogenesis, obtainable by genetically engineering two important regulators of angiogenesis, an angiogenic factor antagonist and an endothelial structure regulator (such as vascular endothelial cadherin).

[0007] We have therefore genetically engineered a recombinant molecule that comprises both a sequence capable of expressing a specific antagonist and a sequence capable of expressing a specific endothelial cell marker, being a vascular endothelial structure regulator, which is essential to the formation of new blood vessels. The recombinant products (referred to collectively herein as KV products, such as those referred to as KVEn, wherein n is an integer, K represents the angiogenic factor antagonist, V represents vascular endothelial cells and E represents the expression vector, and others referred to by J numbers) both retain the antagonistic properties of an anti-angiogenic factor; and also specifically recognise cells that produce new blood vessels, ie vascular endothelial cells.

[0008] Therefore, the recombinant products will work on the general mechanism for forming new blood vessels as well as on a specific mechanism operated by a specific angiogenic factor; and have the further advantage in preventing the balance switch and angiogenesis resistance that currently faces anti-angiogenesis therapy.

[0009] Accordingly, the present invention provides an isolated, purified or recombinant nucleic acid sequence (hereinafter, a KV sequence) comprising:

[0010] (a) a sequence that encodes both an angiogenic factor antagonist and a vascular endothelial structure regulator;

[0011] (b) a sequence substantially homologous to or that hybridises to sequence (a) under stringent conditions; or

[0012] (c) a sequence substantially homologous to or that hybridises under stringent conditions to the sequence (a) or (b) but for the degeneracy of the genetic code; or

[0013] (d) an oligonucleotide specific for any of the sequences (a), (b) or (c).

[0014] By ‘homologous’ herein is meant a sequence having at least 80% identity of nucleotides (or, in the case of an amino acid sequence, bases) in the same order within the sequence. Preferably, the sequence has at least 85% and more preferably at least 90%, such as over 95% homology.

[0015] The present invention further provides a polypeptide (protein) sequence (of amino acids) encoded by a nucleotide sequence of the invention.

[0016] Specific embodiments of the present invention will therefore now be described with reference to the accompanying Figures, in which:

[0017]FIG. 1 is the nucleic acid sequence of the recombinant KVE702, having 1695 nucleic acids;

[0018]FIG. 2 is the predicted amino acid sequence of KVE702 protein, encoded by the recombinant KVE702 sequence, reading from position 1 and having 566 amino acids;

[0019]FIG. 3 is that part of the sequence of FIG. 1 derived from MRC-5 (the angiogenic antagonist component, KS2101);

[0020]FIG. 4 is that part of the sequence of FIG. 1 derived from HUVEC (the vascular endothelial structure regulator component, VC503);

[0021]FIG. 5 is the nucleic acid sequence of KS2105;

[0022]FIG. 6 is the nucleic acid sequence of VC1;

[0023]FIG. 7 is the nucleic acid sequence of J12;

[0024]FIG. 8 is the nucleic acid sequence of the recombinant J35;

[0025]FIG. 9 is the nucleic acid sequence of J11;

[0026]FIG. 10 is the nucleic acid sequence of the recombinant J36;

[0027]FIG. 11 is the nucleic acid sequence of J8;

[0028]FIG. 12 is the nucleic acid sequence of J37;

[0029]FIG. 13 is the predicted amino acid sequence for J35 protein, corresponding to the nucleic acid sequence of FIG. 8;

[0030]FIG. 14 is the predicted amino acid sequence for J36 protein, corresponding to the nucleic acid sequence of FIG. 10;

[0031]FIG. 15 is the predicted amino acid sequence for J37 protein, corresponding to the nucleic acid sequence of FIG. 12;

[0032]FIG. 16 is the nucleic acid sequence of J9;

[0033]FIG. 17 is the nucleic acid sequence of J10; and

[0034]FIG. 18 is the nucleic acid sequence of J6.

[0035] Particular oligonucleotides (d) that are included in this invention are those encoding the vascular endothelial structure regulator. The endothelial structure regulator is suitably derived from VE-cadherin, E-selectin, occludin, claudin-5 and/or vascular cell adhesion molecule (VCAM), especially VE-cadherin, occluding and claudin-5.

[0036] Accordingly, the present invention further provides an isolated, purified or recombinant nucleic acid sequence (hereinafter, a KV sequence) comprising:

[0037] (a) a sequence that encodes a vascular endothelial structure regulator, such as VC1, VC503, J8, J11 and J12, as defined below;

[0038] (b) a sequence substantially homologous to or that hybridises to sequence (a) under stringent conditions; or

[0039] (c) a sequence substantially homologous to or that hybridises under stringent conditions to the sequence (a) or (b) but for the degeneracy of the genetic code; or

[0040] (e) an oligonucleotide specific for any of the sequences (a), (b) or (c).

[0041] The antagonist fragment is suitably derived from VEGF, bFGF, hepatocyte growth factor/scatter factor (HGF/SF) and/or chemokines. Preferably, the antagonist fragment is derived from VEGF and/or HGF/SF. Particularly preferred antagonist fragments are KS2101 and KS2105, as defined below.

[0042] In general, such products may be prepared by using a conventional recombinant DNA technique. For example, first, a plurality of separate DNA fragments are prepared, at least one of which comprises a sequence encoding an antagonist and at least one of which comprises a sequence encoding the endothelial structure regulator. This may be carried out with specific primers that allow a further recombinant to be prepared, which generates a new recombinant gene. In particular, certain recombinant genes, referred to hereinbelow as KVE702, J35, J36 and J37, have been generated from DNA fragments cloned from human fibroblasts and vascular endothelial cells. The new KVE702 gene and its fragments have been used to transfect human epithelial cells and to generate products that may be suitable for angiogenesis intervention.

[0043] Accordingly, the present invention further provides an isolated, purified or recombinant nucleic acid sequence comprising:

[0044] (a) a sequence that encodes both an angiogenic factor antagonist derivable from a human fibroblast cell line, preferably MRC-5, and a vascular endothelial structure regulator comprised in human vascular endothelial cells (HUVEC) extractable from human umbilical vein;

[0045] (b) a sequence substantially homologous to or that hybridises to sequence (a) under stringent conditions; or

[0046] (c) a sequence substantially homologous to or that hybridises under stringent conditions to the sequence (a) or (b) but for the degeneracy of the genetic code; or

[0047] (d) an oligonucleotide specific for any of the sequences (a), (b) or (c).

[0048] The MRC-5 cell line is available from the European Collection of Animal Cell Cultures, and HUVEC is obtainable by extraction from fresh umbilical cord.

[0049] Preferably, the sequence (a) is selected from the following:

[0050] as shown in FIG. 1, [SEQ ID NO: ] [KVE702 sequence];

[0051] as shown in FIG. 8, [SEQ ID NO: ] [J35 sequence];

[0052] as shown in FIG. 10, [SEQ ID NO: ] [J36 sequence]; and,

[0053] as shown in FIG. 12, [SEQ ID NO: ] [J37 sequence];

[0054] That part of the sequence according to the invention [KVE702 sequence] derived from the MRC-5 cell line is shown in FIG. 3 [SEQ ID NO ], being a first part (the KS2101 component) of the KVE702 sequence. That part of the sequence according to the invention [KVE702 sequence] derived from HUVEC is shown in FIG. 4 [SEQ ID NO ], being the remaining part (the VC503 component) of the KVE702 sequence.

[0055] That part of the sequence according to the invention [J35 sequence] derived from the MRC-5 cell line is shown in FIG. 16 [SEQ ID NO ], being a first part (the J9 component) of the J35 sequence. That part of the sequence according to the invention [J35 sequence] derived from HUVEC is shown in FIG. 7 [SEQ ID NO ], being the remaining part (the J12 component) of the J35 sequence.

[0056] That part of the sequence according to the invention [J36 sequence] derived from the MRC-5 cell line is shown in FIG. 17 [SEQ ID NO ], being a first part (the J10 component) of the J36 sequence. That part of the sequence according to the invention [J36 sequence] derived from HUVEC is shown in FIG. 9 [SEQ ID NO ], being the remaining part (the J11 component) of the J36 sequence.

[0057] That part of the sequence according to the invention [J37 sequence] derived from the MRC-5 cell line is shown in FIG. 18 [SEQ ID NO ], being a first part (the J6 component) of the J37 sequence. That part of the sequence according to the invention [J37 sequence] derived from HUVEC is shown in FIG. 11 [SEQ ID NO ], being the remaining part (the J8 component) of the J37 sequence.

[0058] Using these cloned products, it is possible to transfect a suitable cell and establish stable transfectants to see whether the transfection affects the motile behaviour of the transfected cells. Determination of a suitable cell for transfection is carried out by usual trial-and-error methods known in the art in which, for example, human epithelial, fibroblast or leukaemic cells are transfected with a plasmid carrying both the gene and an antibiotic resistance gene, to which toxic antibiotics (such as G418, available from InVitrogen) are added. Cells that are able to incorporate the gene will therefore die as a result of the antibiotic, thereby allowing exclusion of cells unsuitable for transfection. An example of such suitable cells is the human breast cancer cell line, MCF-7. The transfectants can then be used to generate recombinant proteins for testing in an angiogenesis assay and subsequent selection for therapeutic and/or diagnostic use.

[0059] Accordingly, the present invention further provides an isolated, purified or recombinant construct incorporating a KV sequence according to the above description, in particular, one wherein the nucleic acid sequence is linked operably with nucleotides enabling expression and secretion in a cellular host of a protein (hereinafter, the KV protein) encoded by the KV sequence.

[0060] Furthermore, this invention provides DNA or RNA, especially cDNA or mRNA, according to any of the aforementioned sequences or constructs; and a method for preparing such DNA or RNA as described herein, together with such DNA or RNA preparable by such a method.

[0061] Accordingly, the present invention also provides a method for preparing a KV sequence, which method comprises:

[0062] (a) generating a fragment of cDNA encoding a specific angiogenesis factor antagonist;

[0063] (b) generating a fragment of cDNA encoding a specific vascular endothelial structure regulator, which fragments (a) and (b) are complementary at one end thereof; and

[0064] (c) combining the fragments to generate a recombinant gene capable of expressing the corresponding KV protein.

[0065] Especially, the present invention provides an isolated, purified or recombinant polypeptide comprising both an angiogenic factor antagonist and a vascular endothelial structure regulator, such as those mentioned herein; and, in particular, an isolated, purified or recombinant polypeptide comprising KV protein, or a mutant or variant thereof having substantially the same activity as KV protein.

[0066] For example, there is provided an isolated, purified or recombinant polypeptide comprising an amino acid sequence selected from FIG. 2, SEQ ID NO: [predicted KVE702 protein]; FIG. 13, [SEQ ID NO: ] [predicted J35 protein]; FIG. 14, [SEQ ID NO: ] [predicted J36 protein]; and FIG. 15, [SEQ ID NO: ] [predicted J37 protein]; or any KV protein when expressed by a DNA sequence according to this invention.

[0067] It will be apparent that the invention therefore further provides a cell, plasmid, virus or live organism that has been genetically-engineered to produce a KV protein, said cell, plasmid, virus or live organism having incorporated expressibly therein a KV nucleotide sequence according to this invention; a vector comprising such a sequence; and/or a host cell transformed or transfected with such a vector.

[0068] For gene therapy, preferably a viral vector would be chosen and genetically-engineered to produce the KV protein. Both retroviral and adenoviral vectors could be used, such as the Retro-X™ or Adeno-X™ systems from Clontech (USA).

[0069] Furthermore, this invention provides a process for obtaining a substantially homologous source of KV protein, which process comprises culturing cells having incorporated expressibly therein a KV nucleotide sequence according to this invention, and thereafter recovering the cultured cells.

[0070] The KV protein(s) according to this invention may therefore be used in connection with any condition associated with angiogenesis, such as cancer, for the regulation of the development of blood vessels and their formation, whether in the vascular endothelium and/or a tumour. A suitable dose may be determined according to conventional techniques known to those skilled in the art of pharmacy, but may conveniently be in the range of from 0.5 to 10 mg/kg bodyweight, administered in a suitable regime, such as from once to seven times per week.

[0071] Accordingly, the present invention still further provides such a KV protein, optionally in association with a pharmaceutically acceptable carrier therefor, for use in therapy, such as for use in any of the conditions mentioned herein. It is especially preferred that, for protein therapy, there is provided a pharmaceutical formulation comprising such a protein (KV protein) in association with a pharmaceutically acceptable carrier therefor. Preferred formulations include those for parenteral administration, such as injections and infusions for intravenous or intramuscular administration. Other suitable formulations are well-known to those skilled in the art of pharmaceuticals.

[0072] Also provided are:

[0073] a method for preparing such formulations, which method comprises bringing the protein (KV protein) into association with the carrier;

[0074] a method for the prophylaxis or treatment of a mammal, including man, comprising the administration to said mammal of a non-toxic, effective amount of such a protein (KV protein);

[0075] a KV protein for use in medicine, such as in the inhibition of angiogenesis and/or the treatment of cancer; and

[0076] the use of a KV protein in the preparation of a medicament, suitable for use in the inhibition of angiogenesis and/or the treatment of cancer.

[0077] The following examples are provided by way of illustration of the present invention.

EXAMPLE 1 Cloning of KVE702 Recombinant Gene

[0078] Cells Used

[0079] Human fibroblasts (an established cell line, MRC-5) and human vascular endothelial cells (HUVEC) (extracted from human umbilical vein) (Cai J et al. Gamma linolenic acid inhibits expression of VE-cadherin and tube formation in human vascular endothelial cells. Biochemical and Biophysical Research Communications, 1999, 258, 113-118) were used.

[0080] Preparation of Human mRNA and cDNA Template

[0081] mRNA was isolated from fibroblasts or endothelial cells using an mRNA extraction kit (Sigma Chemicals, Poole, Dorset, UK). Complementary DNA (cDNA) was prepared from the mRNA using a reverse transcription kit (Promega).

[0082] Oligonucleotides (Primers) Used in PCR Reaction and Recombinant PCR

[0083] Sets of PCR primers were designed to amplify the areas of interest from the prepared cDNA, ie antagonist from the fibroblasts and endothelial marker/antagonist from the endothelial cells. The PCR primers were designed in such way that the products of each reaction would be used in the subsequent recombination. The primers were synthesised by Life Technologies and used exclusively for this work. Those primers designed for the cloning of the recombinant gene named herein KVE702 were as follows: i CAT GAG CCT CTG GAC TAT TGT AGG TGT GGT ii ACC ACA CCT ACA ATA GTC CAG AGG CTC ATG AT iii ACC ATG GAT CCA GCA CTG AAG ATA AAA ACC iv TTT GAT GGT GAA GCT GGA

[0084] The amplification was carried out at three separate settings: first, to generate a fragment from fibroblast cDNA and, secondly, to generate a fragment from HUVEC cDNA, both products being complementary at one end. The final step was to generate a recombinant product by joining the two fragments. Each reaction was performed under special conditions in order to generate the desired products, as follows:

[0085] Setting 1 (to generate antagonist): 95° C. for 5 minutes, then 36 cycles of 95° C. for 1 minute, 61° C. for 1 minute and 72° C. for 2 minutes, followed by 72° C. for 7 minutes.

[0086] Setting 2 (to generate endothelial marker): 95° C. for 5 minutes, then 36 cycles of 95° C. for 40 seconds, 58° C. for 2 minutes and 72° C. for 2 minutes, followed by 72° C. for 10 minutes.

[0087] Setting 3 (to generate recombinant gene): without primer at 95° C. for 5 minutes, then

[0088] 4 cycles of 95° C. for 40 seconds, 35° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 90 seconds, then

[0089] 4 cycles of 95° C. for 40 seconds, 40° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 90 seconds, then

[0090] 4 cycles of 95° C. for 40 seconds, 45° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 90 seconds, then

[0091] 4 cycles of 95° C. for 40 seconds, 50° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 90 seconds, then

[0092] 4 cycles of 95° C. for 40 seconds, 55° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 90 seconds, then

[0093] 4 cycles of 95° C. for 40 seconds, 60° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 90 seconds, then

[0094] 4 cycles of 95° C. for 40 seconds, 64° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 90 seconds, followed by 72° C. for 10 minutes;

[0095] then, with primers added, 35 cycles of 95° C. for 40 seconds, 59° C. for 1 minute and 72° C. for 90 seconds, followed by 72° C. for 10 minutes.

[0096] From these reactions, the following products were generated:

[0097] 1. DNA fragments were isolated from fibroblasts using RT-PCR, referred to herein as: KS2101 (FIG. 3, [SEQ ID NO: ]) & KS2105 (FIG. 5, [SEQ ID NO: ]) (relating to the antagonist). KS2105 is related to KS2101, but not having a tail corresponding to the endothelial marker. KS2105 was prepared by using the following additional primer: v GAC TAT TGT AGG TGT GGT ATC

[0098] 2. DNA fragments from HUVEC cells, referred to herein as: VC503 (FIG. 4, [SEQ ID NO: ]) and VC1 (FIG. 6, [SEQ ID NO: ]) (both relating to vascular endothelial structure regulators). VC1 is related to VC503 by not having a tail corresponding to the antagonist and was prepared by using the following additional primer: v GTG TCC TTG TCC ACA ATG ACT

[0099] 3. The recombinant sequence: A further step was carried out to generate the recombinant sequence, by joining KS2101 and VC503, using the aforementioned recombinant technique. This generated a specific recombinant sequence, namely KVE702 (FIG. 1, [SEQ ID NO: ]).

[0100] Cloning of the Specific Products

[0101] Each fragment and the recombinant gene were cloned into a mammalian expression vector (pcDNA3.1/V5/His-TOPO, available from InVitrogen) and transfected into a competent E. coli. Colonies that carried the desired products were detected using PCR. The positive colonies were further expanded and grown in large volume. Plasmids resulting from cloning the genes into the vector (ie that carried the specific products) were then purified from these E. coli preparations.

EXAMPLE 2 Transfection and Establishment of a KVE702-Expressing Cell

[0102] KS2101, KS2105, VC1, VC503 and KVE702 gene-carrying plasmids were transfected into mammalian epithelial cells. A transfection agent, Transfast (Promega), was used. After series testing, MCF-7 cells (well-known as a human breast cancer cell line) were found to be the most suitable and acceptable cell for this purpose and chosen to be the cells for transfection in the current study. The optimal transfection condition was at Transfast:DNA=2:1.

[0103] After transfection, cells that retained these new genes were selected using a selection medium containing G418 (from InVitrogen or Calbiochem), which caused cells that had no new genes gradually to die out whilst those with new genes carried on dividing. Cells expressing these new genes of interest were obtained after over 4 weeks' selection (so-called stable transfectants). It was observed that wild type (non-transfected) cells were almost all dead after two weeks, whilst between 10-30% of the cells transfected with the genes of interest remained viable. In approximately 4 weeks, enough of these viable cells were available for biological testing.

EXAMPLE 3 Testing of Newly-Established Stable Transfectants—Motility

[0104] In order to test whether the stably transfected cells (prepared according to Example 2) were different from the wild type, a technique known as the cell spreading/colony scattering assay was carried out (Jiang et al Monocyte conditioned media possess a novel factor which increases motility of cancer cells Int. J. Cancer 53 426-431 (1993)). Briefly, wild type or transfectants were plated in tissue cultureware at low density and then allowed to form colonies (clusters). These were then treated either with medium as control or with a scatter-inducing faction (HGF/SF). After 24 hours, cells were fixed and digitised images were obtained using a digital camera. The spreading and scattering were quantified as described by Jiang et al. (in Gamma linolenic acid selectively regulates the expression maspin and motility of cancer cells Biochemical and Biophysical Research Communications 237 639-644 (1997)) using an image analysis package (Optimas 6 from Optimas UK); the results for each culture were as follows:

[0105] Wild Type

[0106] Wild type MCF-7 cells formed tightly packed clusters in culture with apparent cell-cell joining. A scattering inducer (HGF/SF) can disperse the colonies, ie cells apparently move away from each other.

[0107] VC1 Transfectants

[0108] VC1 transfected cells appeared as much tighter clusters, compared with the wild type. VC1 transfectant substantially reduced their response to HGF/SF (5, 10, 2 and 50 ng/ml). Cells appeared as small, tightly-packed clusters, with cell-cell joining remaining visible.

[0109] KS2105 AND KS2101 Transfectants

[0110] KS2105 transfectant exhibited a similar cell morphology, when compared with controls. These cells, however, reduced their response significantly to HGF/SF. A similar response, although to a lesser degree, was seen with KS2101 transfectants.

[0111] KVE702 Transfectants

[0112] The established KVE702 revealed a similar morphology to control. Scattering inducer HGF/SF failed to induced a significant change. Hence, transfection did not alter the morphology of the cell, but reduced its response to HGF/SF.

CONCLUSION

[0113] The data obtained therefore clearly show that MCF-7 cells transfected with VC1, KS2101 and KS2105 did not significantly change their morphology. In fact, the cells appeared to reduce their response to stimulation. The data thus indicate that transfection did not alter the aggressiveness of MCF-7 cells.

EXAMPLE 4 Testing of the Recombinant Product on Angiogenesis

[0114] The study used a technique known as in vitro tubule formation analysis, to test the effect of recombinant materials on the formation of blood vessel-like structures (Kanayasu et al Eicosapentaenoic acid inhibits tube formation of vascular endothelial cells in vitro. Lipids, 26 271-276 (1991); Bach et al VE-cadherin mediates endothelial cell capillary tube formation in fibrin and collagen gels Exp Cell Res 238 324-334 (1998)).

[0115] 24 multi-well plates were first coated with Matrigel™ (available from Beckton Dickinson) (200 pg/well) and allowed to form a thin gel layer. 5×10⁴ HUVEC cells in 0.5 ml of DMEM with 10% foetal calf serum (FCS) were then added over Matrigel™ for 24 hours. The medium was aspirated, and a further 0.5 ml of Matrigel™ was overlaid with a further 0.5 ml of medium, which contained either medium, HGF, NK4, or NK4 and HGF in combination. Cell cultures were observed under a phase-contrast microscope after 24 hours. Each well was photographed four times at random and tubule length was measured using an image analysis software (Optimas 6 from Optimas UK). A known angiogenesis inducer, HGF/SF, and conditioned medium from the stable transfectants were then tested on the cells. The results of the study were as follows:

[0116] VC1 and KS2105 Products Reduced the Tubule Formation

[0117] Conditioned medium from the VC1 transfectant reduced the tubule forming that was induced by HGF/SF. The conditioned medium on its own appeared to have some minor effect on tubule formation. Interestingly, KS2105 supernatant reduced tubule formation both with and without angiogenesis inducer.

[0118] KVE702 Reduced Tubule Formation

[0119] Conditioned medium from KVE702 increased tubule length, although to a small degree. However, when an angiogenic factor was included, which significantly increased tubule length, KVE702 supernatant exerted a significant inhibitory effect on tubule formation. Conclusion: Therefore, it was observed that HGF/SF significantly increased tubule formation from vascular endothelial cells. Supernatants from the stable transfectants can reduce this increase in tubule formation. Hence, the present invention may present a new opportunity to produce anti-cancer agents.

EXAMPLE 5 Testing of the Recombinant Product on Invasiveness

[0120] Using the techniques described above in Example 2, MCF-7 (human breast cancer cells) were transfected with KVE702 gene and a stable transfectant selected using G418. The cells were then tested using the established Matrigel™ invasion assay described by Jiang et al in Cancer Research, 55 5043-8 (1995). It was found that the transfected cells had a reduced invasiveness compared with wild MCF-7 cells or with MCF-7 cells that had been transfected with a control plasmid carrying the Lac-z gene (available from InVitrogen). The response of the transfected cells to HGF/SF was also found to be significantly reduced, compared to wild and control cells.

[0121] Since invasiveness of cancer cells is directly related to the progression and metastasis of a cancer, its reduction indicates a potential future in cancer therapy for the recombinant product of the invention.

EXAMPLE 6 Cloning of J35 Recombinant Gene

[0122] Following the method of Example 1, the title recombinant product was prepared, using the following primers in place of i-iv of Example 1: i acc atg ggc gcg cag tgc acc ii ctt cag tgc tgg cac aga cgg gtc gta iii tac gac ccg tct gtg cca gca ctg aag iv gac tat tgt agg tgt ggt a

[0123] From these reactions, the following products were generated:

[0124] 1. DNA fragments were isolated from fibroblasts using RT-PCR: J9 (antagonist) (FIG. 16, [SEQ ID NO: ]).

[0125] 2. DNA fragments were isolated from HUVEC cells: J12 (endothelial marker) (FIG. 7, [SEQ ID NO: ]).

[0126] 3. A recombinant gene: A further step was carried to generate a recombinant gene, by joining J9 and J12, using the aforementioned recombinant technique. This generated a specific recombinant gene, namely: J35 (recombinant product) (FIG. 8, [SEQ ID NO: ]).

EXAMPLE 7 Cloning of J36 Recombinant Gene

[0127] Following the method of Example 1, the title recombinant product was prepared, using the following primers in place of i-iv of Example 1: i acc atg gga gtg aac cca act gct cag ii ctt cag tgc tgg ctc ctg ggg atc cac iii gtg gat ccc cag gag cca gca ctg aag iv gac tat tgt agg tgt ggt a

[0128] From these reactions, the following products were generated:

[0129] 1. DNA fragments were isolated from fibroblasts using RT-PCR: J10 (antagonist) (FIG. 17, [SEQ ID NO: ]).

[0130] 2. DNA fragments were isolated from HUVEC cells: J11 (endothelial marker) (FIG. 9, [SEQ ID NO: ])

[0131] 3. A recombinant gene: A further step was carried to generate a recombinant gene, by joining KS2101 and J11, using the aforementioned recombinant technique. This generated a specific recombinant gene, namely: J36 (recombinant product) (FIG. 10, [SEQ ID NO: ]).

EXAMPLE 8 Cloning of J37 Recombinant Gene

[0132] Following the method of Example 1, the title recombinant product was prepared, using the following primers in place of i-iv of Example 1: i acc atg gga gtg aac cca act gct cag ii cca aat cca atc ctc ctg gga atc cac iii gtg gat ccc cag gag gat tgg att tgg iv ctg ggc ggc cat atc ctc gca gaa ggt

[0133] From these reactions, the following products were generated:

[0134] 1. DNA fragments were isolated from fibroblasts using RT-PCR: J6 (antagonist) (FIG. 18, [SEQ ID NO: ]).

[0135] 2. DNA fragments were isolated from HUVEC cells: J8 (endothelial marker) (FIG. 11, [SEQ ID NO ])

[0136] 3. A recombinant gene: A further step was carried to generate a recombinant gene, by joining KS2101 and J8, using the aforementioned recombinant technique. This generated a specific recombinant gene, namely: J37 (recombinant product) (FIG. 10, [SEQ ID NO: ]).

1 18 1 1695 DNA Homo sapiens 1 atagatccag cactgaagat aaaaaccaaa aaagtgaata ctgcagacca atgtgctaat 60 agatgtacta ggaataatgg acttccattc acttgcaagg cctttgtttt tgataaagcg 120 agaaaacaat gcctctggtt ccccttcaat agcatgtcaa gtggagtgaa gaaagaattt 180 ggccatgaat ttgacctcta tgaaaacaaa gactacatta gaaactgcat catcggtaaa 240 ggacgcagct acaagggaac agtatctatc actaagagtg gcatcaaatg tcagccctgg 300 agttccatga taccacacga acacagcttt ttgccttcga gctatcgggg taaagaccta 360 caggaaaact actgtcgaaa tcctcgaggg gaagaagggg gaccctggtg tttcacaagc 420 aatccagagg tacgctacga agtctgtgac attcctcagt gttcagaagt tgaatgcatg 480 acctgcaatg gggagagtta tcgaggtctc atggatcata cagaatcagg caagatttgt 540 cagcgctggg atcatcagac accacaccgg cacaaattct tgcctgaaag atatcccgac 600 aagggctttg atgataatta ttgccgcaat cccgatggcc agccgaggcc atggtgctat 660 actcttgacc ctcacacccg ctgggagtac tgtgcaatta aaacatgcgc tgacaatact 720 gtaaatgata ctgatgttcc tatggaaaca actgaatgca tccaaggtca aggagaaggc 780 tacaggggca ctgccaatac catttggaat ggaattccat gtcagcgttg ggattctcag 840 tatcctcaca agcatgacat gactcctgaa aatttcaagt gcaaggacct acgagaaaat 900 tactgccgaa atccagatgg gtctgaatca ccctggtgtt ttaccactga tccaaacatc 960 cgagttggtt actgctccca aattccaaac tgtgatatgt caaatggaca agattgttat 1020 cgtgggaatg gcaaaaatta tatgggcaac ttatcccaaa caagatctgg actaacgtgt 1080 tcaatgtgga acaagaacat ggaagactta caccgtcata tcttctggga accagatgca 1140 agtaagctga atgagaatta ctgccgaaat ccagatgatg atgctcatgg accctggtgc 1200 tacacgggaa atccactcat tccttgggat tattgcccta tttctcgttg tgaaggtgat 1260 accacaccta caatagtcca gaggctcatg atgctcctcg ccacatcggg cgcctgcctg 1320 ggcctgctgg cagtggcagc agtggcagca gcaggtgcta accctgccca acgggacacc 1380 cacagcctgc tgcccaccca ccggcgccaa aagagagatt ggatttggaa ccagatgcac 1440 attgatgaag agaaaaacac ctcacttccc catcatgtag gcaagatcaa gtcaagcgtg 1500 agtcgcaaga atgccaagta cctgctcaaa ggagaatatg tgggcaaggt cttccgggtc 1560 gatgcagaga caggagacgt gttcgccatt gagaggctgg accgggagaa tatctcagag 1620 taccacctca ctgctgtcat tgtggacaag gacactggtg aaaacctgga gactccttcc 1680 agcttcacca tcaaa 1695 2 566 PRT Homo sapiens 2 Lys Ile Asp Pro Ala Leu Lys Ile Lys Thr Lys Lys Val Asn Thr Ala 1 5 10 15 Asp Gln Cys Ala Asn Arg Cys Thr Arg Asn Asn Gly Leu Pro Phe Thr 20 25 30 Cys Lys Ala Phe Val Phe Asp Lys Ala Arg Lys Gln Cys Leu Trp Phe 35 40 45 Pro Phe Asn Ser Met Ser Ser Gly Val Lys Lys Glu Phe Gly His Glu 50 55 60 Phe Asp Leu Tyr Glu Asn Lys Asp Tyr Ile Arg Asn Cys Ile Ile Gly 65 70 75 80 Lys Gly Arg Ser Tyr Lys Gly Thr Val Ser Ile Thr Lys Ser Gly Ile 85 90 95 Lys Cys Gln Pro Trp Ser Ser Met Ile Pro His Glu His Ser Phe Leu 100 105 110 Pro Ser Ser Tyr Arg Gly Lys Asp Leu Gln Glu Asn Tyr Cys Arg Asn 115 120 125 Pro Arg Gly Glu Glu Gly Gly Pro Trp Cys Phe Thr Ser Asn Pro Glu 130 135 140 Val Arg Tyr Glu Val Cys Asp Ile Pro Gln Cys Ser Glu Val Glu Cys 145 150 155 160 Met Thr Cys Asn Gly Glu Ser Tyr Arg Gly Leu Met Asp His Thr Glu 165 170 175 Ser Gly Lys Ile Cys Gln Arg Trp Asp His Gln Thr Pro His Arg His 180 185 190 Lys Phe Leu Pro Glu Arg Tyr Pro Asp Lys Gly Phe Asp Asp Asn Tyr 195 200 205 Cys Arg Asn Pro Asp Gly Gln Pro Arg Pro Trp Cys Tyr Thr Leu Asp 210 215 220 Pro His Thr Arg Trp Glu Tyr Cys Ala Ile Lys Thr Cys Ala Asp Asn 225 230 235 240 Thr Val Asn Asp Thr Asp Val Pro Met Glu Thr Thr Glu Cys Ile Gln 245 250 255 Gly Gln Gly Glu Gly Tyr Arg Gly Thr Ala Asn Thr Ile Trp Asn Gly 260 265 270 Ile Pro Cys Gln Arg Trp Asp Ser Gln Tyr Pro His Lys His Asp Met 275 280 285 Thr Pro Glu Asn Phe Lys Cys Lys Asp Leu Arg Glu Asn Tyr Cys Arg 290 295 300 Asn Pro Asp Gly Ser Glu Ser Pro Trp Cys Phe Thr Thr Asp Pro Asn 305 310 315 320 Ile Arg Val Gly Tyr Cys Ser Gln Ile Pro Asn Cys Asp Met Ser Asn 325 330 335 Gly Gln Asp Cys Tyr Arg Gly Asn Gly Lys Asn Tyr Met Gly Asn Leu 340 345 350 Ser Gln Thr Arg Ser Gly Leu Thr Cys Ser Met Trp Asn Lys Asn Met 355 360 365 Glu Asp Leu His Arg His Ile Phe Trp Glu Pro Asp Ala Ser Lys Leu 370 375 380 Asn Glu Asn Tyr Cys Arg Asn Pro Asp Asp Asp Ala His Gly Pro Trp 385 390 395 400 Cys Tyr Thr Gly Asn Pro Leu Ile Pro Trp Asp Tyr Cys Pro Ile Ser 405 410 415 Arg Cys Glu Gly Asp Thr Thr Pro Thr Ile Val Gln Arg Leu Met Met 420 425 430 Leu Leu Ala Thr Ser Gly Ala Cys Leu Gly Leu Leu Ala Val Ala Ala 435 440 445 Val Ala Ala Ala Gly Ala Asn Pro Ala Gln Arg Asp Thr His Ser Leu 450 455 460 Leu Pro Thr His Arg Arg Gln Lys Arg Asp Trp Ile Trp Asn Gln Met 465 470 475 480 His Ile Asp Glu Glu Lys Asn Thr Ser Leu Pro His His Val Gly Lys 485 490 495 Ile Lys Ser Ser Val Ser Arg Lys Asn Ala Lys Tyr Leu Leu Lys Gly 500 505 510 Glu Tyr Val Gly Lys Val Phe Arg Val Asp Ala Glu Thr Gly Asp Val 515 520 525 Phe Ala Ile Glu Arg Leu Asp Arg Glu Asn Ile Ser Glu Tyr His Leu 530 535 540 Thr Ala Val Ile Val Asp Lys Asp Thr Gly Glu Asn Leu Glu Thr Pro 545 550 555 560 Ser Ser Phe Thr Ile Lys 565 3 1278 DNA Homo sapiens 3 atagatccag cactgaagat aaaaaccaaa aaagtgaata ctgcagacca atgtgctaat 60 agatgtacta ggaataatgg acttccattc acttgcaagg cctttgtttt tgataaagcg 120 agaaaacaat gcctctggtt ccccttcaat agcatgtcaa gtggagtgaa gaaagaattt 180 ggccatgaat ttgacctcta tgaaaacaaa gactacatta gaaactgcat catcggtaaa 240 ggacgcagct acaagggaac agtatctatc actaagagtg gcatcaaatg tcagccctgg 300 agttccatga taccacacga acacagcttt ttgccttcga gctatcgggg taaagaccta 360 caggaaaact actgtcgaaa tcctcgaggg gaagaagggg gaccctggtg tttcacaagc 420 aatccagagg tacgctacga agtctgtgac attcctcagt gttcagaagt tgaatgcatg 480 acctgcaatg gggagagtta tcgaggtctc atggatcata cagaatcagg caagatttgt 540 cagcgctggg atcatcagac accacaccgg cacaaattct tgcctgaaag atatcccgac 600 aagggctttg atgataatta ttgccgcaat cccgatggcc agccgaggcc atggtgctat 660 actcttgacc ctcacacccg ctgggagtac tgtgcaatta aaacatgcgc tgacaatact 720 gtaaatgata ctgatgttcc tatggaaaca actgaatgca tccaaggtca aggagaaggc 780 tacaggggca ctgccaatac catttggaat ggaattccat gtcagcgttg ggattctcag 840 tatcctcaca agcatgacat gactcctgaa aatttcaagt gcaaggacct acgagaaaat 900 tactgccgaa atccagatgg gtctgaatca ccctggtgtt ttaccactga tccaaacatc 960 cgagttggtt actgctccca aattccaaac tgtgatatgt caaatggaca agattgttat 1020 cgtgggaatg gcaaaaatta tatgggcaac ttatcccaaa caagatctgg actaacgtgt 1080 tcaatgtgga acaagaacat ggaagactta caccgtcata tcttctggga accagatgca 1140 agtaagctga atgagaatta ctgccgaaat ccagatgatg atgctcatgg accctggtgc 1200 tacacgggaa atccactcat tccttgggat tattgcccta tttctcgttg tgaaggtgat 1260 accacaccta caatagtc 1278 4 437 DNA Homo sapiens 4 accacaccta caatagtcca cagaggctca tgatgctcct cgccacatcg ggcgcctgcc 60 tgggcctgct ggcagtggca gcagtggcag cagcaggtgc taaccctgcc caacgggaca 120 cccacagcct gctgcccacc caccggcgcc aaaagagaga ttggatttgg aaccagatgc 180 acattgatga agagaaaaac acctcacttc cccatcatgt aggcaagatc aagtcaagcg 240 tgagtcgcaa gaatgccaag tacctgctca aaggagaata tgtgggcaag gtcttccggg 300 tcgatgcaga gacaggagac gtgttcgcca ttgagaggct ggaccgggag aatatctcag 360 agtaccacct cactgctgtc attgtggaca aggacactgg tgaaaacctg gagactcctt 420 ccagcttcac catcaaa 437 5 1287 DNA Homo sapiens 5 accatgatca tagatccagc actgaagata aaaaccaaaa aagtgaatac tgcagaccaa 60 tgtgctaata gatgtactag gaataatgga cttccattca cttgcaaggc ctttgttttt 120 gataaagcga gaaaacaatg cctctggttc cccttcaata gcatgtcaag tggagtgaag 180 aaagaatttg gccatgaatt tgacctctat gaaaacaaag actacattag aaactgcatc 240 atcggtaaag gacgcagcta caagggaaca gtatctatca ctaagagtgg catcaaatgt 300 cagccctgga gttccatgat accacacgaa cacagctttt tgccttcgag ctatcggggt 360 aaagacctac aggaaaacta ctgtcgaaat cctcgagggg aagaaggggg accctggtgt 420 ttcacaagca atccagaggt acgctacgaa gtctgtgaca ttcctcagtg ttcagaagtt 480 gaatgcatga cctgcaatgg ggagagttat cgaggtctca tggatcatac agaatcaggc 540 aagatttgtc agcgctggga tcatcagaca ccacaccggc acaaattctt gcctgaaaga 600 tatcccgaca agggctttga tgataattat tgccgcaatc ccgatggcca gccgaggcca 660 tggtgctata ctcttgaccc tcacacccgc tgggagtact gtgcaattaa aacatgcgct 720 gacaatactg taaatgatac tgatgttcct atggaaacaa ctgaatgcat ccaaggtcaa 780 ggagaaggct acaggggcac tgccaatacc atttggaatg gaattccatg tcagcgttgg 840 gattctcagt atcctcacaa gcatgacatg actcctgaaa atttcaagtg caaggaccta 900 cgagaaaatt actgccgaaa tccagatggg tctgaatcac cctggtgttt taccactgat 960 ccaaacatcc gagttggtta ctgctcccaa attccaaact gtgatatgtc aaatggacaa 1020 gattgttatc gtgggaatgg caaaaattat atgggcaact tatcccaaac aagatctgga 1080 ctaacgtgtt caatgtggaa caagaacatg gaagacttac accgtcatat cttctgggaa 1140 ccagatgcaa gtaagctgaa tgagaattac tgccgaaatc cagatgatga tgctcatgga 1200 ccctggtgct acacgggaaa tccactcatt ccttgggatt attgccctat ttctcgttgt 1260 gaaggtgata ccacacctac aatagtc 1287 6 415 DNA Homo sapiens 6 gaggctcatg atgctcctcg ccacatcggg cgcctgcctg ggcctgctgg cagtggcagc 60 agtggcagca gcaggtgcta accctgccca acgggacacc cacagcctgc tgcccaccca 120 ccggcgccaa aagagagatt ggatttggaa ccagatgcac attgatgaag agaaaaacac 180 ctcacttccc catcatgtag gcaagatcaa gtcaagcgtg agtcgcaaga atgccaagta 240 cctgctcaaa ggagaatatg tgggcaaggt cttccgggtc gatgcagaga caggagacgt 300 gttcgccatt gagaggctgg accgggagaa tatctcagag taccacctca ctgctgtcat 360 tgtggacaag gacactggtg aaaacctgga gactccttcc agcttcacca tcaaa 415 7 156 DNA Homo sapiens 7 ggcgcgcagt gcaccacctg cgtggccccg ggcccggcca aggcgcgtgt ggccctcacg 60 ggaggcgtgc tctacctgtt ttgcgggctg ctggcgctcg tgccactctg ctggttcgcc 120 aacattgtcg tccgcgagtt ttacgacccg tctgtg 156 8 1428 DNA Homo sapiens 8 ggcgcgcagt gcaccacctg cgtggccccg ggcccggcca aggcgcgtgt ggccctcacg 60 ggaggcgtgc tctacctgtt ttgcgggctg ctggcgctcg tgccactctg ctggttcgcc 120 aacattgtcg tccgcgagtt ttacgacccg tctgtgccag cactgaagat aaaaaccaaa 180 aaagtgaata ctgcagacca atgtgctaat agatgtacta ggaataatgg acttccattc 240 acttgcaagg cctttgtttt tgataaagcg agaaaacaat gcctctggtt ccccttcaat 300 agcatgtcaa gtggagtgaa gaaagaattt ggccatgaat ttgacctcta tgaaaacaaa 360 gactacatta gaaactgcat catcggtaaa ggacgcagct acaagggaac agtatctatc 420 actaagagtg gcatcaaatg tcagccctgg agttccatga taccacacga acacagcttt 480 ttgccttcga gctatcgggg taaagaccta caggaaaact actgtcgaaa tcctcgaggg 540 gaagaagggg gaccctggtg tttcacaagc aatccagagg tacgctacga agtctgtgac 600 attcctcagt gttcagaagt tgaatgcatg acctgcaatg gggagagtta tcgaggtctc 660 atggatcata cagaatcagg caagatttgt cagcgctggg atcatcagac accacaccgg 720 cacaaattct tgcctgaaag atatcccgac aagggctttg atgataatta ttgccgcaat 780 cccgatggcc agccgaggcc atggtgctat actcttgacc ctcacacccg ctgggagtac 840 tgtgcaatta aaacatgcgc tgacaatact gtaaatgata ctgatgttcc tatggaaaca 900 actgaatgca tccaaggtca aggagaaggc tacaggggca ctgccaatac catttggaat 960 ggaattccat gtcagcgttg ggattctcag tatcctcaca agcatgacat gactcctgaa 1020 aatttcaagt gcaaggacct acgagaaaat tactgccgaa atccagatgg gtctgaatca 1080 ccctggtgtt ttaccactga tccaaacatc cgagttggtt actgctccca aattccaaac 1140 tgtgatatgt caaatggaca agattgttat cgtgggaatg gcaaaaatta tatgggcaac 1200 ttatcccaaa caagatctgg actaacgtgt tcaatgtgga acaagaacat ggaagactta 1260 caccgtcata tcttctggga accagatgca agtaagctga atgagaatta ctgccgaaat 1320 ccagatgatg atgctcatgg accctggtgc tacacgggaa atccactcat tccttgggat 1380 tattgcccta tttctcgttg tgaaggtgat accacaccta caatagtc 1428 9 144 DNA Homo sapiens 9 ggagtgaacc caactgctca gtcttctgga tctctatatg gttcacaaat atatgccctc 60 tgcaaccaat tttatacacc tgcagctact ggactctacg tggatcagta tttgtatcac 120 tactgtgttg tggatcccca ggag 144 10 1416 DNA Homo sapiens 10 ggagtgaacc caactgctca gtcttctgga tctctatatg gttcacaaat atatgccctc 60 tgcaaccaat tttatacacc tgcagctact ggactctacg tggatcagta tttgtatcac 120 tactgtgttg tggatcccca ggagccagca ctgaagataa aaaccaaaaa agtgaatact 180 gcagaccaat gtgctaatag atgtactagg aataatggac ttccattcac ttgcaaggcc 240 tttgtttttg ataaagcgag aaaacaatgc ctctggttcc ccttcaatag catgtcaagt 300 ggagtgaaga aagaatttgg ccatgaattt gacctctatg aaaacaaaga ctacattaga 360 aactgcatca tcggtaaagg acgcagctac aagggaacag tatctatcac taagagtggc 420 atcaaatgtc agccctggag ttccatgata ccacacgaac acagcttttt gccttcgagc 480 tatcggggta aagacctaca ggaaaactac tgtcgaaatc ctcgagggga agaaggggga 540 ccctggtgtt tcacaagcaa tccagaggta cgctacgaag tctgtgacat tcctcagtgt 600 tcagaagttg aatgcatgac ctgcaatggg gagagttatc gaggtctcat ggatcataca 660 gaatcaggca agatttgtca gcgctgggat catcagacac cacaccggca caaattcttg 720 cctgaaagat atcccgacaa gggctttgat gataattatt gccgcaatcc cgatggccag 780 ccgaggccat ggtgctatac tcttgaccct cacacccgct gggagtactg tgcaattaaa 840 acatgcgctg acaatactgt aaatgatact gatgttccta tggaaacaac tgaatgcatc 900 caaggtcaag gagaaggcta caggggcact gccaatacca tttggaatgg aattccatgt 960 cagcgttggg attctcagta tcctcacaag catgacatga ctcctgaaaa tttcaagtgc 1020 aaggacctac gagaaaatta ctgccgaaat ccagatgggt ctgaatcacc ctggtgtttt 1080 accactgatc caaacatccg agttggttac tgctcccaaa ttccaaactg tgatatgtca 1140 aatggacaag attgttatcg tgggaatggc aaaaattata tgggcaactt atcccaaaca 1200 agatctggac taacgtgttc aatgtggaac aagaacatgg aagacttaca ccgtcatatc 1260 ttctgggaac cagatgcaag taagctgaat gagaattact gccgaaatcc agatgatgat 1320 gctcatggac cctggtgcta cacgggaaat ccactcattc cttgggatta ttgccctatt 1380 tctcgttgtg aaggtgatac cacacctaca atagtc 1416 11 150 DNA Homo sapiens 11 accatgggag tgaacccaac tgctcagtct tctggatctc tatatggttc acaaatatat 60 gccctctgca accaatttta tacacctgca gctactggac tctacgtgga tcagtatttg 120 tatcactact gtgttgtgga tccccaggag 150 12 1788 DNA Homo sapiens 12 accatgggag tgaacccaac tgctcagtct tctggatctc tatatggttc acaaatatat 60 gccctctgca accaatttta tacacctgca gctactggac tctacgtgga tcagtatttg 120 tatcactact gtgttgtgga tccccaggag gattggattt ggaaccagat gcacattgat 180 gaagagaaaa acacctcact tccccatcat gtaggcaaga tcaagtcaag cgtgagtcgc 240 aagaatgcca agtacctgct caaaggagaa tatgtgggca aggtcttccg ggtcgatgca 300 gagacaggag acgtgttcgc cattgagagg ctggaccggg agaatatctc agagtaccac 360 ctcactgctg tcattgtgga caaggacact ggtgaaaacc tggagactcc ttccagcttc 420 accatcaaag ttcatgacgt gaacgacaac tggcctgtgt tcacgcatcg gttgttcaat 480 gcgtccgtgc ctgagtcgtc ggctgtgggg acctcagtca tctctgtgac agcagtggat 540 gcagacgacc ccactgtggg agaccacgcc tctgtcatgt accaaatcct gaaggggaaa 600 gagtattttg ccatcgataa ttctggacgt attatcacaa taacgaaaag cttggaccga 660 gagaagcagg ccaggtatga gatcgtggtg gaagcgcgag atgcccaggg cctccggggg 720 gactcgggca cggccaccgt gctggtcact ctgcaagaca tcaatgacaa cttccccttc 780 ttcacccaga ccaagtacac atttgtcgtg cctgaagaca cccgtgtggg cacctctgtg 840 ggctctctgt ttgttgagga cccagatgag ccccagaacc ggatgaccaa gtacagcatc 900 ttgcggggcg actaccagga cgctttcacc attgagacaa accccgccca caacgagggc 960 atcatcaagc ccatgaagcc tctggattat gaatacatcc agcaatacag cttcatcgtc 1020 gaggccacag accccaccat cgacctccga tacatgagcc ctcccgcggg aaacagagcc 1080 caggtcatta tcaacatcac agatgtggac gagcccccca ttttccagca gcctttctac 1140 cacttccagc tgaaggaaaa ccagaagaag cctctgattg gcacagtgct ggccatggac 1200 cctgatgcgg ctaggcatag cattggatac tccatccgca ggaccagtga caagggccag 1260 ttcttccgag tcacaaaaaa gggggacatt tacaatgaga aagaactgga cagagaagtc 1320 tacccctggt ataacctgac tgtggaggcc aaagaactgg attccactgg aacccccaca 1380 ggaaaagaat ccattgtgca agtccacatt gaagttttgg atgagaatga caatgccccg 1440 gagtttgcca agccctacca gcccaaagtg tgtgagaacg ctgtccatgg ccagctggtc 1500 ctgcagatct ccgcaataga caaggacata acaccacgaa acgtgaagtt caaattcatc 1560 ttgaatactg agaacaactt taccctcacg gataatcacg ataacacggc caacatcaca 1620 gtcaagtatg ggcagtttga ccgggagcat accaaggtcc acttcctacc cgtggtcatc 1680 tcagacaatg ggatgccaag tcgcacgggc accagcacgc tgaccgtggc cgtgtgcaag 1740 tgcaacgagc agggcgagtt caccttctgc gaggatatgg ccgcccag 1788 13 482 PRT Homo sapiens 13 Gly Ala Gln Cys Thr Thr Cys Val Ala Pro Gly Pro Ala Lys Ala Arg 1 5 10 15 Val Ala Leu Thr Gly Gly Val Leu Tyr Leu Phe Cys Gly Leu Leu Ala 20 25 30 Leu Val Pro Leu Cys Trp Phe Ala Asn Ile Val Val Arg Glu Phe Tyr 35 40 45 Asp Pro Ser Val Pro Val Ser Lys Ile Asp Pro Ala Leu Lys Ile Lys 50 55 60 Thr Lys Lys Val Asn Thr Ala Asp Gln Cys Ala Asn Arg Cys Thr Arg 65 70 75 80 Asn Asn Gly Leu Pro Phe Thr Cys Lys Ala Phe Val Phe Asp Lys Ala 85 90 95 Arg Lys Gln Cys Leu Trp Phe Pro Phe Asn Ser Met Ser Ser Gly Val 100 105 110 Lys Lys Glu Phe Gly His Glu Phe Asp Leu Tyr Glu Asn Lys Asp Tyr 115 120 125 Ile Arg Asn Cys Ile Ile Gly Lys Gly Arg Ser Tyr Lys Gly Thr Val 130 135 140 Ser Ile Thr Lys Ser Gly Ile Lys Cys Gln Pro Trp Ser Ser Met Ile 145 150 155 160 Pro His Glu His Ser Phe Leu Pro Ser Ser Tyr Arg Gly Lys Asp Leu 165 170 175 Gln Glu Asn Tyr Cys Arg Asn Pro Arg Gly Glu Glu Gly Gly Pro Trp 180 185 190 Cys Phe Thr Ser Asn Pro Glu Val Arg Tyr Glu Val Cys Asp Ile Pro 195 200 205 Gln Cys Ser Glu Val Glu Cys Met Thr Cys Asn Gly Glu Ser Tyr Arg 210 215 220 Gly Leu Met Asp His Thr Glu Ser Gly Lys Ile Cys Gln Arg Trp Asp 225 230 235 240 His Gln Thr Pro His Arg His Lys Phe Leu Pro Glu Arg Tyr Pro Asp 245 250 255 Lys Gly Phe Asp Asp Asn Tyr Cys Arg Asn Pro Asp Gly Gln Pro Arg 260 265 270 Pro Trp Cys Tyr Thr Leu Asp Pro His Thr Arg Trp Glu Tyr Cys Ala 275 280 285 Ile Lys Thr Cys Ala Asp Asn Thr Val Asn Asp Thr Asp Val Pro Met 290 295 300 Glu Thr Thr Glu Cys Ile Gln Gly Gln Gly Glu Gly Tyr Arg Gly Thr 305 310 315 320 Ala Asn Thr Ile Trp Asn Gly Ile Pro Cys Gln Arg Trp Asp Ser Gln 325 330 335 Tyr Pro His Lys His Asp Met Thr Pro Glu Asn Phe Lys Cys Lys Asp 340 345 350 Leu Arg Glu Asn Tyr Cys Arg Asn Pro Asp Gly Ser Glu Ser Pro Trp 355 360 365 Cys Phe Thr Thr Asp Pro Asn Ile Arg Val Gly Tyr Cys Ser Gln Ile 370 375 380 Pro Asn Cys Asp Met Ser Asn Gly Gln Asp Cys Tyr Arg Gly Asn Gly 385 390 395 400 Lys Asn Tyr Met Gly Asn Leu Ser Gln Thr Arg Ser Gly Leu Thr Cys 405 410 415 Ser Met Trp Asn Lys Asn Met Glu Asp Leu His Arg His Ile Phe Trp 420 425 430 Glu Pro Asp Ala Ser Lys Leu Asn Glu Asn Tyr Cys Arg Asn Pro Asp 435 440 445 Asp Asp Ala His Gly Pro Trp Cys Tyr Thr Gly Asn Pro Leu Ile Pro 450 455 460 Trp Asp Tyr Cys Pro Ile Ser Arg Cys Glu Gly Asp Thr Thr Pro Thr 465 470 475 480 Ile Val 14 475 PRT Homo sapiens 14 Gly Val Asn Pro Thr Ala Gln Ser Ser Gly Ser Leu Tyr Gly Ser Gln 1 5 10 15 Ile Tyr Ala Leu Cys Asn Gln Phe Tyr Thr Pro Ala Ala Thr Gly Leu 20 25 30 Tyr Val Asp Gln Tyr Leu Tyr His Tyr Cys Val Val Asp Pro Gln Glu 35 40 45 Lys Ile Asp Pro Ala Leu Lys Ile Lys Thr Lys Lys Val Asn Thr Ala 50 55 60 Asp Gln Cys Ala Asn Arg Cys Thr Arg Asn Asn Gly Leu Pro Phe Thr 65 70 75 80 Cys Lys Ala Phe Val Phe Asp Lys Ala Arg Lys Gln Cys Leu Trp Phe 85 90 95 Pro Phe Asn Ser Met Ser Ser Gly Val Lys Lys Glu Phe Gly His Glu 100 105 110 Phe Asp Leu Tyr Glu Asn Lys Asp Tyr Ile Arg Asn Cys Ile Ile Gly 115 120 125 Lys Gly Arg Ser Tyr Lys Gly Thr Val Ser Ile Thr Lys Ser Gly Ile 130 135 140 Lys Cys Gln Pro Trp Ser Ser Met Ile Pro His Glu His Ser Phe Leu 145 150 155 160 Pro Ser Ser Tyr Arg Gly Lys Asp Leu Gln Glu Asn Tyr Cys Arg Asn 165 170 175 Pro Arg Gly Glu Glu Gly Gly Pro Trp Cys Phe Thr Ser Asn Pro Glu 180 185 190 Val Arg Tyr Glu Val Cys Asp Ile Pro Gln Cys Ser Glu Val Glu Cys 195 200 205 Met Thr Cys Asn Gly Glu Ser Tyr Arg Gly Leu Met Asp His Thr Glu 210 215 220 Ser Gly Lys Ile Cys Gln Arg Trp Asp His Gln Thr Pro His Arg His 225 230 235 240 Lys Phe Leu Pro Glu Arg Tyr Pro Asp Lys Gly Phe Asp Asp Asn Tyr 245 250 255 Cys Arg Asn Pro Asp Gly Gln Pro Arg Pro Trp Cys Tyr Thr Leu Asp 260 265 270 Pro His Thr Arg Trp Glu Tyr Cys Ala Ile Lys Thr Cys Ala Asp Asn 275 280 285 Thr Val Asn Asp Thr Asp Val Pro Met Glu Thr Thr Glu Cys Ile Gln 290 295 300 Gly Gln Gly Glu Gly Tyr Arg Gly Thr Ala Asn Thr Ile Trp Asn Gly 305 310 315 320 Ile Pro Cys Gln Arg Trp Asp Ser Gln Tyr Pro His Lys His Asp Met 325 330 335 Thr Pro Glu Asn Phe Lys Cys Lys Asp Leu Arg Glu Asn Tyr Cys Arg 340 345 350 Asn Pro Asp Gly Ser Glu Ser Pro Trp Cys Phe Thr Thr Asp Pro Asn 355 360 365 Ile Arg Val Gly Tyr Cys Ser Gln Ile Pro Asn Cys Asp Met Ser Asn 370 375 380 Gly Gln Asp Cys Tyr Arg Gly Asn Gly Lys Asn Tyr Met Gly Asn Leu 385 390 395 400 Ser Gln Thr Arg Ser Gly Leu Thr Cys Ser Met Trp Asn Lys Asn Met 405 410 415 Glu Asp Leu His Arg His Ile Phe Trp Glu Pro Asp Ala Ser Lys Leu 420 425 430 Asn Glu Asn Tyr Cys Arg Asn Pro Asp Asp Asp Ala His Gly Pro Trp 435 440 445 Cys Tyr Thr Gly Asn Pro Leu Ile Pro Trp Asp Tyr Cys Pro Ile Ser 450 455 460 Arg Cys Glu Gly Asp Thr Thr Pro Thr Ile Val 465 470 475 15 594 PRT Homo sapiens 15 Gly Val Asn Pro Thr Ala Gln Ser Ser Gly Ser Leu Tyr Gly Ser Gln 1 5 10 15 Ile Tyr Ala Leu Cys Asn Gln Phe Tyr Thr Pro Ala Ala Thr Gly Leu 20 25 30 Tyr Val Asp Gln Tyr Leu Tyr His Tyr Cys Val Val Asp Pro Gln Glu 35 40 45 Asp Trp Ile Trp Asn Gln Met His Ile Asp Glu Glu Lys Asn Thr Ser 50 55 60 Leu Pro His His Val Gly Lys Ile Lys Ser Ser Val Ser Arg Lys Asn 65 70 75 80 Ala Lys Tyr Leu Leu Lys Gly Glu Tyr Val Gly Lys Val Phe Arg Val 85 90 95 Asp Ala Glu Thr Gly Asp Val Phe Ala Ile Glu Arg Leu Asp Arg Glu 100 105 110 Asn Ile Ser Glu Tyr His Leu Thr Ala Val Ile Val Asp Lys Asp Thr 115 120 125 Gly Glu Asn Leu Glu Thr Pro Ser Ser Phe Thr Ile Lys Val His Asp 130 135 140 Val Asn Asp Asn Trp Pro Val Phe Thr His Arg Leu Phe Asn Ala Ser 145 150 155 160 Val Pro Glu Ser Ser Ala Val Gly Thr Ser Val Ile Ser Val Thr Ala 165 170 175 Val Asp Ala Asp Asp Pro Thr Val Gly Asp His Ala Ser Val Met Tyr 180 185 190 Gln Ile Leu Lys Gly Lys Glu Tyr Phe Ala Ile Asp Asn Ser Gly Arg 195 200 205 Ile Ile Thr Ile Thr Lys Ser Leu Asp Arg Glu Lys Gln Ala Arg Tyr 210 215 220 Glu Ile Val Val Glu Ala Arg Asp Ala Gln Gly Leu Arg Gly Asp Ser 225 230 235 240 Gly Thr Ala Thr Val Leu Val Thr Leu Gln Asp Ile Asn Asp Asn Phe 245 250 255 Pro Phe Phe Thr Gln Thr Lys Tyr Thr Phe Val Val Pro Glu Asp Thr 260 265 270 Arg Val Gly Thr Ser Val Gly Ser Leu Phe Val Glu Asp Pro Asp Glu 275 280 285 Pro Gln Asn Arg Met Thr Lys Tyr Ser Ile Leu Arg Gly Asp Tyr Gln 290 295 300 Asp Ala Phe Thr Ile Glu Thr Asn Pro Ala His Asn Glu Gly Ile Ile 305 310 315 320 Lys Pro Met Lys Pro Leu Asp Tyr Glu Tyr Ile Gln Gln Tyr Ser Phe 325 330 335 Ile Val Glu Ala Thr Asp Pro Thr Ile Asp Leu Arg Tyr Met Ser Pro 340 345 350 Pro Ala Gly Asn Arg Ala Gln Val Ile Ile Asn Ile Thr Asp Val Asp 355 360 365 Glu Pro Pro Ile Phe Gln Gln Pro Phe Tyr His Phe Gln Leu Lys Glu 370 375 380 Asn Gln Lys Lys Pro Leu Ile Gly Thr Val Leu Ala Met Asp Pro Asp 385 390 395 400 Ala Ala Arg His Ser Ile Gly Tyr Ser Ile Arg Arg Thr Ser Asp Lys 405 410 415 Gly Gln Phe Phe Arg Val Thr Lys Lys Gly Asp Ile Tyr Asn Glu Lys 420 425 430 Glu Leu Asp Arg Glu Val Tyr Pro Trp Tyr Asn Leu Thr Val Glu Ala 435 440 445 Lys Glu Leu Asp Ser Thr Gly Thr Pro Thr Gly Lys Glu Ser Ile Val 450 455 460 Gln Val His Ile Glu Val Leu Asp Glu Asn Asp Asn Ala Pro Glu Phe 465 470 475 480 Ala Lys Pro Tyr Gln Pro Lys Val Cys Glu Asn Ala Val His Gly Gln 485 490 495 Leu Val Leu Gln Ile Ser Ala Ile Asp Lys Asp Ile Thr Pro Arg Asn 500 505 510 Val Lys Phe Lys Phe Thr Leu Asn Thr Glu Asn Asn Phe Thr Leu Thr 515 520 525 Asp Asn His Asp Asn Thr Ala Asn Ile Thr Val Lys Tyr Gly Gln Phe 530 535 540 Asp Arg Glu His Thr Lys Val His Phe Leu Pro Val Val Ile Ser Asp 545 550 555 560 Asn Gly Met Pro Ser Arg Thr Gly Thr Ser Thr Leu Thr Val Ala Val 565 570 575 Cys Lys Cys Asn Glu Gln Gly Glu Phe Thr Phe Cys Glu Asp Met Ala 580 585 590 Ala Gln 16 1272 DNA Homo sapiens 16 ccagcactga agataaaaac caaaaaagtg aatactgcag accaatgtgc taatagatgt 60 actaggaata atggacttcc attcacttgc aaggcctttg tttttgataa agcgagaaaa 120 caatgcctct ggttcccctt caatagcatg tcaagtggag tgaagaaaga atttggccat 180 gaatttgacc tctatgaaaa caaagactac attagaaact gcatcatcgg taaaggacgc 240 agctacaagg gaacagtatc tatcactaag agtggcatca aatgtcagcc ctggagttcc 300 atgataccac acgaacacag ctttttgcct tcgagctatc ggggtaaaga cctacaggaa 360 aactactgtc gaaatcctcg aggggaagaa gggggaccct ggtgtttcac aagcaatcca 420 gaggtacgct acgaagtctg tgacattcct cagtgttcag aagttgaatg catgacctgc 480 aatggggaga gttatcgagg tctcatggat catacagaat caggcaagat ttgtcagcgc 540 tgggatcatc agacaccaca ccggcacaaa ttcttgcctg aaagatatcc cgacaagggc 600 tttgatgata attattgccg caatcccgat ggccagccga ggccatggtg ctatactctt 660 gaccctcaca cccgctggga gtactgtgca attaaaacat gcgctgacaa tactgtaaat 720 gatactgatg ttcctatgga aacaactgaa tgcatccaag gtcaaggaga aggctacagg 780 ggcactgcca ataccatttg gaatggaatt ccatgtcagc gttgggattc tcagtatcct 840 cacaagcatg acatgactcc tgaaaatttc aagtgcaagg acctacgaga aaattactgc 900 cgaaatccag atgggtctga atcaccctgg tgttttacca ctgatccaaa catccgagtt 960 ggttactgct cccaaattcc aaactgtgat atgtcaaatg gacaagattg ttatcgtggg 1020 aatggcaaaa attatatggg caacttatcc caaacaagat ctggactaac gtgttcaatg 1080 tggaacaaga acatggaaga cttacaccgt catatcttct gggaaccaga tgcaagtaag 1140 ctgaatgaga attactgccg aaatccagat gatgatgctc atggaccctg gtgctacacg 1200 ggaaatccac tcattccttg ggattattgc cctatttctc gttgtgaagg tgataccaca 1260 cctacaatag tc 1272 17 1272 DNA Homo sapiens 17 ccagcactga agataaaaac caaaaaagtg aatactgcag accaatgtgc taatagatgt 60 actaggaata atggacttcc attcacttgc aaggcctttg tttttgataa agcgagaaaa 120 caatgcctct ggttcccctt caatagcatg tcaagtggag tgaagaaaga atttggccat 180 gaatttgacc tctatgaaaa caaagactac attagaaact gcatcatcgg taaaggacgc 240 agctacaagg gaacagtatc tatcactaag agtggcatca aatgtcagcc ctggagttcc 300 atgataccac acgaacacag ctttttgcct tcgagctatc ggggtaaaga cctacaggaa 360 aactactgtc gaaatcctcg aggggaagaa gggggaccct ggtgtttcac aagcaatcca 420 gaggtacgct acgaagtctg tgacattcct cagtgttcag aagttgaatg catgacctgc 480 aatggggaga gttatcgagg tctcatggat catacagaat caggcaagat ttgtcagcgc 540 tgggatcatc agacaccaca ccggcacaaa ttcttgcctg aaagatatcc cgacaagggc 600 tttgatgata attattgccg caatcccgat ggccagccga ggccatggtg ctatactctt 660 gaccctcaca cccgctggga gtactgtgca attaaaacat gcgctgacaa tactgtaaat 720 gatactgatg ttcctatgga aacaactgaa tgcatccaag gtcaaggaga aggctacagg 780 ggcactgcca ataccatttg gaatggaatt ccatgtcagc gttgggattc tcagtatcct 840 cacaagcatg acatgactcc tgaaaatttc aagtgcaagg acctacgaga aaattactgc 900 cgaaatccag atgggtctga atcaccctgg tgttttacca ctgatccaaa catccgagtt 960 ggttactgct cccaaattcc aaactgtgat atgtcaaatg gacaagattg ttatcgtggg 1020 aatggcaaaa attatatggg caacttatcc caaacaagat ctggactaac gtgttcaatg 1080 tggaacaaga acatggaaga cttacaccgt catatcttct gggaaccaga tgcaagtaag 1140 ctgaatgaga attactgccg aaatccagat gatgatgctc atggaccctg gtgctacacg 1200 ggaaatccac tcattccttg ggattattgc cctatttctc gttgtgaagg tgataccaca 1260 cctacaatag tc 1272 18 1638 DNA Homo sapiens 18 gattggattt ggaaccagat gcacattgat gaagagaaaa acacctcact tccccatcat 60 gtaggcaaga tcaagtcaag cgtgagtcgc aagaatgcca agtacctgct caaaggagaa 120 tatgtgggca aggtcttccg ggtcgatgca gagacaggag acgtgttcgc cattgagagg 180 ctggaccggg agaatatctc agagtaccac ctcactgctg tcattgtgga caaggacact 240 ggtgaaaacc tggagactcc ttccagcttc accatcaaag ttcatgacgt gaacgacaac 300 tggcctgtgt tcacgcatcg gttgttcaat gcgtccgtgc ctgagtcgtc ggctgtgggg 360 acctcagtca tctctgtgac agcagtggat gcagacgacc ccactgtggg agaccacgcc 420 tctgtcatgt accaaatcct gaaggggaaa gagtattttg ccatcgataa ttctggacgt 480 attatcacaa taacgaaaag cttggaccga gagaagcagg ccaggtatga gatcgtggtg 540 gaagcgcgag atgcccaggg cctccggggg gactcgggca cggccaccgt gctggtcact 600 ctgcaagaca tcaatgacaa cttccccttc ttcacccaga ccaagtacac atttgtcgtg 660 cctgaagaca cccgtgtggg cacctctgtg ggctctctgt ttgttgagga cccagatgag 720 ccccagaacc ggatgaccaa gtacagcatc ttgcggggcg actaccagga cgctttcacc 780 attgagacaa accccgccca caacgagggc atcatcaagc ccatgaagcc tctggattat 840 gaatacatcc agcaatacag cttcatcgtc gaggccacag accccaccat cgacctccga 900 tacatgagcc ctcccgcggg aaacagagcc caggtcatta tcaacatcac agatgtggac 960 gagcccccca ttttccagca gcctttctac cacttccagc tgaaggaaaa ccagaagaag 1020 cctctgattg gcacagtgct ggccatggac cctgatgcgg ctaggcatag cattggatac 1080 tccatccgca ggaccagtga caagggccag ttcttccgag tcacaaaaaa gggggacatt 1140 tacaatgaga aagaactgga cagagaagtc tacccctggt ataacctgac tgtggaggcc 1200 aaagaactgg attccactgg aacccccaca ggaaaagaat ccattgtgca agtccacatt 1260 gaagttttgg atgagaatga caatgccccg gagtttgcca agccctacca gcccaaagtg 1320 tgtgagaacg ctgtccatgg ccagctggtc ctgcagatct ccgcaataga caaggacata 1380 acaccacgaa acgtgaagtt caaattcatc ttgaatactg agaacaactt taccctcacg 1440 gataatcacg ataacacggc caacatcaca gtcaagtatg ggcagtttga ccgggagcat 1500 accaaggtcc acttcctacc cgtggtcatc tcagacaatg ggatgccaag tcgcacgggc 1560 accagcacgc tgaccgtggc cgtgtgcaag tgcaacgagc agggcgagtt caccttctgc 1620 gaggatatgg ccgcccag 1638 

1-15. (cancelled)
 16. An isolated, purified or recombinant nucleic acid molecule (hereinafter ‘KV molecule’) comprising: a molecule that encodes both an angiogenic factor antagonist and a vascular endothelial structure regulator; or a homologue thereof.
 17. A nucleic acid molecule encoding two functionally distinct proteins wherein one of said proteins is an angiogenic factor antagonist and so acts to inhibit those factors that promote angiogenesis and the other of said proteins is a vascular endothelial structure regulator and so acts as a marker on endothelial ceslls to regulate endothelial structure.
 18. A molecule according to claim 16, wherein the angiogenic factor antagonist is derived from VEGF, bFGF, hepatocyte growth factor/scatter factor (HGF/SF) and/or chemokines.
 19. A molecule according to claim 16, wherein the endothelial structure regulator is derived from VE-cadherin, E-selectin, occludin, claudin-5 and/or vascular cell adhesion molecule (VCAM).
 20. A molecule according to claim 16, comprising KS 2101, KS2105, J6, J9 or J10, as defined herein.
 21. A molecule according to claim 16, comprising VC1, VC503, J11, J12 or J8, as defined herein.
 22. A molecule according to claim 16, comprising KVE702, J35, J36 or J37, as defined herein.
 23. A polypeptide sequence (hereinafter “KV protein”) encoded by a nucleic acid molecule according to claim
 16. 24. A polypeptide sequence according to claim 23, comprising KVE702 protein, J35 protein, J36 protein or J37 protein, as defined herein.
 25. A vector having incorporated expressibly therein a KV molecule according to claim
 16. 26. A cell, plasmid, virus, bacterium or other live organism having incorporated expressibly therein a KV molecule according to claim 16
 27. A host cell transfected or transformed with a vector according to claim
 25. 28. The use of a host cell according to claim 27 in the treatment or prevention of angoigenesis or cancer.
 29. The use of a KV protein according to claim 23 in the preparation of a medicament for the treatment or prevention of angoigenesis or cancer.
 30. A formulation comprising a KV protein according to claim 23 in association with a pharmaceuticlally acceptable carrier therefore.
 31. A method for the prophylaxis or treatment of a mammal, including man, comprising the administration to said mammal of a non-toxic, effective amount of a KV protein. 